| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.apex.examples.wordcount; |
| |
| import java.io.BufferedReader; |
| import java.io.DataInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.apache.apex.malhar.lib.io.SimpleSinglePortInputOperator; |
| |
| /** |
| * <p>WordCountInputOperator class.</p> |
| * |
| * @since 0.3.2 |
| */ |
| public class WordCountInputOperator extends SimpleSinglePortInputOperator<String> implements Runnable |
| { |
| |
| private static final Logger logger = LoggerFactory.getLogger(WordCountInputOperator.class); |
| protected long averageSleep = 300; |
| protected long sleepPlusMinus = 100; |
| protected String fileName = "com/datatorrent/examples/wordcount/samplefile.txt"; |
| |
| public void setAverageSleep(long as) |
| { |
| averageSleep = as; |
| } |
| |
| public void setSleepPlusMinus(long spm) |
| { |
| sleepPlusMinus = spm; |
| } |
| |
| public void setFileName(String fn) |
| { |
| fileName = fn; |
| } |
| |
| @Override |
| public void run() |
| { |
| BufferedReader br = null; |
| DataInputStream in = null; |
| InputStream fstream = null; |
| |
| while (true) { |
| try { |
| String line; |
| fstream = this.getClass().getClassLoader().getResourceAsStream(fileName); |
| |
| in = new DataInputStream(fstream); |
| br = new BufferedReader(new InputStreamReader(in)); |
| |
| while ((line = br.readLine()) != null) { |
| String[] words = line.trim().split("[\\p{Punct}\\s\\\"\\'“”]+"); |
| for (String word : words) { |
| word = word.trim().toLowerCase(); |
| if (!word.isEmpty()) { |
| outputPort.emit(word); |
| } |
| } |
| try { |
| Thread.sleep(averageSleep + (new Double(sleepPlusMinus * (Math.random() * 2 - 1))).longValue()); |
| } catch (InterruptedException ex) { |
| // nothing |
| } |
| } |
| |
| } catch (IOException ex) { |
| logger.debug(ex.toString()); |
| } finally { |
| try { |
| if (br != null) { |
| br.close(); |
| } |
| if (in != null) { |
| in.close(); |
| } |
| if (fstream != null) { |
| fstream.close(); |
| } |
| } catch (IOException exc) { |
| // nothing |
| } |
| } |
| } |
| } |
| } |